html, body { font-family: Microsoft YaHei, Arial, Helvetica, sans-serif; font-size: 62.5%; }
@media screen and (min-width:320px) and (max-width:359px) {
    html,
    body { font-size: 58.6% !important }
}
@media screen and (min-width:360px) and (max-width:374px) {
    html,
    body { font-size: 60.3% !important }
}
@media screen and (min-width:375px) and (max-width:383px) {
    html,
    body { font-size: 62.5% !important }
}
@media screen and (min-width:384px) and (max-width:399px) {
    html,
    body { font-size: 65.0% !important }
}
@media screen and (min-width:400px) and (max-width:413px) {
    html,
    body { font-size: 68.1% !important }
}
@media screen and (min-width:414px) and (max-width:431px) {
    html,
    body { font-size: 70.8% !important }
}
@media screen and (min-width:432px) and (max-width:479px) {
    html,
    body { font-size: 74.3% !important }
}
@media screen and (min-width:480px) {
    html,
    body { font-size: 76% !important }
}